i just want to take off the precat to see how my car runs. i think the exhaust is clogged up pretty bad. Something is wrong with the engine too, it would yesterday. what does it mean when it tries to crank really slowly. i know a fast sound mean's no compression, right?

 

Sounds flooded. Do you know about that? Do a search, you should find about a thousand posts. If you can't figure it out or find it, let me know and I'll explain it.